Hand landing and Downward Vision, Downward Infrared

[lomposlapos]

I bring the drone within arm's reach, hold in position, reach undeneath by right hand, grab with thumb and 4 fingers, and keep the left stick full downward until the props stop, like in 3 sec. I assume this works because the 2 downward vision system (DVS) and/or the
Downward Infrared Sensing System (DISS) detect my hand in proximity.

To make this process more efficient and safer, any idea how close the DVS/DISS must detect an object to allow engine shut down, and if the front, rear, or both DVS and/or sibgle DISS needs to detect an object to allow engine shut down (i.e., needs to be covered with my palm)?

 

[msinger]

The engine will be allowed to shut down after the aircraft detects it has landed. It likely figures it has landed after its onboard sensors detect no movement in any direction.

 

[lomposlapos]

The engine will be allowed to shut down after the aircraft detects it has landed. It likely figures it has landed after its onboard sensors detect no movement in any direction.

It will move with my hand more than when holds in position. So "landing" detection is likely by a different mechanism.

 

[msinger]

I'm sure it has no problem detecting when something has grabbed it either.

 

[Mordor]

May i hijack this tread?

I having difficulty on land my drone: i put my hand and it goes up, and on the floor doesn't land immediately...

Any help?
And i think i turn ogg all sensors...

 

[msinger]

Here are some hand catching methods that should work for you:

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[Mordor]

msinger:
Thank you very much!

 

[BigAl07]

I reach under it but not directly. I come up to the aircraft from a 45deg angle as to avoid the sensors, grab the aircraft, and quickly flip it over in one quick movement. This "flip" kills the MOTORS immediately.

I'm flying a Mavic Platinum so your results may vary with an M2 series.

 

[Mordor]

On the video above, seems to be a Zoom model, so i assume is the same behaviour...

 

[lomposlapos]

quickly flip it over in one quick movement. This "flip" kills the MOTORS immediately.

What is the advantage of flipping, instead of holding the left stick down?

 

[BigAl07]

What is the advantage of flipping, instead of holding the left stick down?

Flipping is INSTANTANEOUS in the stopping of the motors as opposed to waiting for the aircraft to settle and the sensors to detect a "landing" situation and then power off.

 

[Kilrah]

Disable "landing protection" so it will not try to dodge your hand anymore and you have full control all the way.

I consider flipping and waving props around more dangerous than quietly waiting a couple of seconds for the motors to stop in a stable situation.

 

[Mordor]

Agree....
If it sleeps from hand....

 

[GadgetGuy]

Flipping is INSTANTANEOUS in the stopping of the motors as opposed to waiting for the aircraft to settle and the sensors to detect a "landing" situation and then power off.

I recall reading somewhere that this is not advised as an everyday method for stopping the motors because of the unnecessary stress forces it creates. It is basically simulating a crash, and is really only intended as a safety kill switch. Is that caution unwarranted?

 

[BigAl07]

I recall reading somewhere that this is not advised as an everyday method for stopping the motors because of the unnecessary stress forces it creates. It is basically simulating a crash, and is really only intended as a safety kill switch. Is that caution unwarranted?

I can't promise it's not stressing the aircraft but I have hundreds of "Hand Landings" doing this method and can see no sign of any problems. Honestly, if I had known about this method sooner I would have thousands but I didn't know about it until fairly recently.

Before learning this method I would do the "pinch & power down" method: hover the aircraft directly in front of my eye level, sneak up on it and very cautiously grab the right rear leg/arm and then power down. Once in a while I would misjudge my distance/speed and my finger/thumb would get whacked by the prop (very little wiggle room there). So since learning about the "Grab And Rotate" that's pretty much how I do it or I was until I got my Lunar landing Pad.... I've only had it 5 days now and I've not "pinched or grabbed/rotated" since getting.

One word of transparency - When I'm on a construction site I always use our large format "collapsible landing disc (4' diameter)" because when we wrote our policies & procedures this is the process we documented in them. I'll probably re-write them in the future and revise our landing methods but until I do I have to follow them exactly how I wrote them when on the Job Site.

 

[GadgetGuy]

I can't promise it's not stressing the aircraft but I have hundreds of "Hand Landings" doing this method and can see no sign of any problems. Honestly, if I had known about this method sooner I would have thousands but I didn't know about it until fairly recently.

Before learning this method I would do the "pinch & power down" method: hover the aircraft directly in front of my eye level, sneak up on it and very cautiously grab the right rear leg/arm and then power down. Once in a while I would misjudge my distance/speed and my finger/thumb would get whacked by the prop (very little wiggle room there). So since learning about the "Grab And Rotate" that's pretty much how I do it or I was until I got my Lunar landing Pad.... I've only had it 5 days now and I've not "pinched or grabbed/rotated" since getting.

One word of transparency - When I'm on a construction site I always use our large format "collapsible landing disc (4' diameter)" because when we wrote our policies & procedures this is the process we documented in them. I'll probably re-write them in the future and revise our landing methods but until I do I have to follow them exactly how I wrote them when on the Job Site.

Thanks for sharing your experience. Happy to hear that there are no signs of any problems. Hundreds of repetitions and your lack of concern is good enough for me. It is quick and easy. I used it on my Spark several times, once I learned about it, but then returned the Spark because of the excessive angry swarm of bess noise, which attracted way too much attention and annoyance in public. Might start using it now on the M2, especially if landing before 10% remaining battery, where it tends to fight more, before shutting down. It's great to have multiple shut down options, especially in a tight handcatch.

 

[Lbesing]

It's also a good solution for landing your M2P at night. Using just the built in bottom LED light seems to be insufficient for it to land. I've had mine refuse to land until I supplied additional lighting, or until the battery reached critical low power levels and forced itself to land.

 

[GadgetGuy]

It's also a good solution for landing your M2P at night. Using just the built in bottom LED light seems to be insufficient for it to land. I've had mine refuse to land until I supplied additional lighting, or until the battery reached critical low power levels and forced itself to land.

Mine is almost always already in Autoland when I am landing, as I generally plan on landing somewhat below 10% from 75 feet above me, so before I reach 10%, I make sure I am at least 75 ‘ above me. I just make sure I am close by (within 500 feet), find it in the sky visually, and then bring it in on a glide path at full speed, allowing the auto descent, knowing I can still override it at any time, as needed, if I get too low to clear the top of the open gazebo frame in front of me, as I reach up to grab it!

 

[lomposlapos]

I bring the drone within arm's reach, hold in position, reach undeneath by right hand, grab with thumb and 4 fingers, and keep the left stick full downward until the props stop, like in 3 sec.

I want to do EXACTLY this in Mavic 3. Do you know if it is possible?

 

[GadgetGuy]

I want to do EXACTLY this in Mavic 3. Do you know if it is possible?

Yes! Give it a try!